135656-81-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 135656-81-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,6,5 and 6 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 135656-81:
(8*1)+(7*3)+(6*5)+(5*6)+(4*5)+(3*6)+(2*8)+(1*1)=144
144 % 10 = 4
So 135656-81-4 is a valid CAS Registry Number.
135656-81-4Relevant articles and documents
A new and efficient route to 3-(1,1-dimethylallyl)coumarins
Collado,Hernandez-Galan,Massanet,Rodriguez-Luis,Salva
, p. 3209 - 3212 (2007/10/02)
A new method for the synthesis of 3-(1,1-dimethylallyl)coumarins is described. The key step involves an Ireland-Claisen rearrangement of an allyl ester
